diff options
| author | Hui Zhu <teawaterz@linux.alibaba.com> | 2019-09-23 15:39:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-24 15:54:12 -0700 |
| commit | c165f25d23ecb2f9f121ced20435415b931219e2 (patch) | |
| tree | 150a2e87f86087e88c69ad589ed6fe08af64960e /mm/zpool.c | |
| parent | 28eb3c80871951cae59b9c1b7385262e5d045ac3 (diff) | |
zpool: add malloc_support_movable to zpool_driver
As a zpool_driver, zsmalloc can allocate movable memory because it support
migate pages. But zbud and z3fold cannot allocate movable memory.
Add malloc_support_movable to zpool_driver. If a zpool_driver support
allocate movable memory, set it to true. And add
zpool_malloc_support_movable check malloc_support_movable to make sure if
a zpool support allocate movable memory.
Link: http://lkml.kernel.org/r/20190605100630.13293-1-teawaterz@linux.alibaba.com
Signed-off-by: Hui Zhu <teawaterz@linux.alibaba.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/zpool.c')
| -rw-r--r-- | mm/zpool.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/zpool.c b/mm/zpool.c index a2dd9107857d..863669212070 100644 --- a/mm/zpool.c +++ b/mm/zpool.c @@ -239,6 +239,22 @@ const char *zpool_get_type(struct zpool *zpool) } /** + * zpool_malloc_support_movable() - Check if the zpool support + * allocate movable memory + * @zpool: The zpool to check + * + * This returns if the zpool support allocate movable memory. + * + * Implementations must guarantee this to be thread-safe. + * + * Returns: true if if the zpool support allocate movable memory, false if not + */ +bool zpool_malloc_support_movable(struct zpool *zpool) +{ + return zpool->driver->malloc_support_movable; +} + +/** * zpool_malloc() - Allocate memory * @zpool: The zpool to allocate from. * @size: The amount of memory to allocate. |